# New Account - dual authentication fail

**URL:** <https://community.fireblocks.com/t/new-account-dual-authentication-fail/3091>\
**Category:** Developer Discussion\
**Created:** [February 6, 2026, 6:00pm UTC](https://community.fireblocks.com/t/new-account-dual-authentication-fail/3091 "2026-02-06T18:00:47Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Investment.Defi](https://avatars.discourse-cdn.com/v4/letter/i/9de053/32.png) [@Investment.Defi](https://community.fireblocks.com/u/Investment.Defi)\
**Post date:** [February 6, 2026, 6:00pm UTC](https://community.fireblocks.com/t/new-account-dual-authentication-fail/3091/1 "2026-02-06T18:00:47Z")

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Hello,

I’m new, trying to connect first time to the sandbox.

Login fail after dual authentication.

What should I do ?

Thanks

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<div class="post-metadata">

**Author:** ![Investment.Defi](https://avatars.discourse-cdn.com/v4/letter/i/9de053/32.png) [@Investment.Defi](https://community.fireblocks.com/u/Investment.Defi)\
**Post date:** [February 12, 2026, 1:02pm UTC](https://community.fireblocks.com/t/new-account-dual-authentication-fail/3091/2 "2026-02-12T13:02:19Z")

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I think my email was not white listed. Can someone help , tHANKS

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<div class="post-metadata">

**Author:** ![Sagar](https://sea1.discourse-cdn.com/flex015/user_avatar/community.fireblocks.com/sagar/32/8_2.png) [@Sagar](https://community.fireblocks.com/u/Sagar)\
**Post date:** [February 20, 2026, 1:27pm UTC](https://community.fireblocks.com/t/new-account-dual-authentication-fail/3091/3 "2026-02-20T13:27:05Z")

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What was the email used for Sandbox sing-up?

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<div class="post-metadata">

**Author:** ![Investment.Defi](https://avatars.discourse-cdn.com/v4/letter/i/9de053/32.png) [@Investment.Defi](https://community.fireblocks.com/u/Investment.Defi)\
**Post date:** [February 20, 2026, 1:58pm UTC](https://community.fireblocks.com/t/new-account-dual-authentication-fail/3091/4 "2026-02-20T13:58:57Z")

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Hello Sagar,

I tried both emails:

- [contact@clinckart.com](mailto:contact@clinckart.com)
- [investments.defi@clinckart.com](mailto:investments.defi@clinckart.com)

Thanks for your help

Kind regards

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<div class="post-metadata">

**Author:** ![Sagar](https://sea1.discourse-cdn.com/flex015/user_avatar/community.fireblocks.com/sagar/32/8_2.png) [@Sagar](https://community.fireblocks.com/u/Sagar)\
**Post date:** [February 20, 2026, 2:04pm UTC](https://community.fireblocks.com/t/new-account-dual-authentication-fail/3091/5 "2026-02-20T14:04:27Z")

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I do not see any Fireblocks Developer Sandbox access requested from these email addresses. I would request you to complete the Sign-Up form here: [Launch Blockchain Products Fast with Fireblocks Sandbox | Fireblocks](https://www.fireblocks.com/developer-sandbox-sign-up)

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<div class="post-metadata">

**Author:** ![Investment.Defi](https://avatars.discourse-cdn.com/v4/letter/i/9de053/32.png) [@Investment.Defi](https://community.fireblocks.com/u/Investment.Defi)\
**Post date:** [February 20, 2026, 2:35pm UTC](https://community.fireblocks.com/t/new-account-dual-authentication-fail/3091/6 "2026-02-20T14:35:09Z")

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Hello Sagar,

I did already.  
I have redo it right now 1 minute ago for [contact@clinckart.com](mailto:contact@clinckart.com)

Could you have a look please ?

Thanks